CN104729172A - Air conditioner and capacity change judgment method thereof - Google Patents
Air conditioner and capacity change judgment method thereof Download PDFInfo
- Publication number
- CN104729172A CN104729172A CN201310719349.6A CN201310719349A CN104729172A CN 104729172 A CN104729172 A CN 104729172A CN 201310719349 A CN201310719349 A CN 201310719349A CN 104729172 A CN104729172 A CN 104729172A
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- compressor
- air
- entrance point
- state
- conditioner
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides an air conditioner and a method for judging capacity change of the air conditioner. An air conditioner according to the present invention includes: the compressor, the four-way valve, the indoor heat exchanger and the outdoor heat exchanger are sequentially communicated; the outlet end of the compressor is communicated with the inlet end of the variable volume cylinder of the compressor, and a solenoid valve is arranged on a pipeline between the outlet end of the compressor and the inlet end of the variable volume cylinder of the compressor; the four-way valve is communicated with the inlet end of a constant volume cylinder of the compressor through a gas-liquid separator; and the controller detects the working state of the electromagnetic valve and the actual running state of the compressor. Through the comparison of the on-off state of the electromagnetic valve and the actual working state of the compressor, whether the compressor fails in single-cylinder and double-cylinder switching is judged, abnormal conditions of the air conditioner unit are prevented, and the reliability and the stability of the air conditioner unit are improved.
Description
Technical field
The present invention relates to field of air conditioning, especially, relate to the determination methods of a kind of air-conditioner and volume change thereof.
Background technology
In prior art, adopt variable capacity two-spool compressor, use birotor pattern when high frequency; the output of large ability can be realized; improve cooling and warming speed, can choice for use single rotor pattern when low frequency, bypass falls a rotor; realize low-power; when air conditioner load is less, can realize not shutting down work, keep the stability of temperature; temperature difference fluctuation is little, energy-conservation, comfortable.But there is no the method that this type of air-conditioning judges unit single cylinder operationally and twin-tub state, when single, double cylinder switching failure, if unit can not judge, then system can be caused unstable, affect performance and the reliability of unit.
Summary of the invention
The object of the invention is the determination methods providing a kind of air-conditioner and volume change thereof, and during to solve single twin-tub switching failure, the technical problem of abnormal conditions appears in unit.
For achieving the above object, the invention provides a kind of air-conditioner, comprising: the compressor be connected successively, cross valve, indoor heat exchanger and outdoor heat exchanger; The port of export of compressor is connected with the transfiguration cylinder entrance point of compressor, and the pipeline between the port of export of compressor and the transfiguration cylinder entrance point of compressor is provided with magnetic valve; Cross valve is connected with the constant volume cylinder entrance point of compressor by gas-liquid separator; Controller, detects the duty of magnetic valve and the actual motion state of compressor.
Further, the transfiguration cylinder entrance point of compressor arranges the first temperature sensor.
Further, the second temperature sensor is provided with between cross valve and gas-liquid separator.
Further, gas-liquid separator outlet is connected with transfiguration cylinder entrance point.
Further, between gas-liquid separator outlet and transfiguration cylinder entrance point, check valve is set.
Further, throttling arrangement is provided with between indoor heat exchanger and outdoor heat exchanger.
Further, also comprise controller, control and judge the on off state of magnetic valve.
Present invention also offers a kind of determination methods of air-conditioner volume change,
Detect the temperature T1 of transfiguration cylinder entrance point; And the temperature T2 of constant volume cylinder entrance point, T2-T1=K;
Relatively K and constant C, detects a period of time, if during K >=C, then compressor actual motion state is that single cylinder runs; If during K < C, then compressor actual motion state is that twin-tub runs;
If judged result conforms to the state that should perform, then continue to run; If judged result and the state that should perform do not meet, then stopping alarm.
Further, the energising situation detecting magnetic valve judges the state that perform, if solenoid valves, then the state that should perform is single cylinder running status, if magnetic valve dead electricity, is then twin-tub running status.
Further, constant C span is 3 DEG C to 7 DEG C.
The present invention has following beneficial effect:
By the power on/off state of magnetic valve and comparing of compressor actual working state, judge whether compressor occurs single twin-tub switching failure, prevent air-conditioner unit from occurring abnormal conditions, improve the reliability and stability of air-conditioner unit.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 runs schematic diagram according to the single cylinder of air-conditioner of the present invention;
Fig. 2 runs schematic diagram according to the twin-tub of air-conditioner of the present invention; And
Fig. 3 is the determination methods schematic diagram according to air-conditioner volume change of the present invention.
Reference numeral in accompanying drawing is as follows: 10, compressor; 20, cross valve; 30, indoor heat exchanger; 40, outdoor heat exchanger; 50, gas-liquid separator; 60, magnetic valve; 71, the first temperature sensor; 72, the second temperature sensor; 80, throttling arrangement; 90, check valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
See Fig. 1 and Fig. 2, according to air-conditioner of the present invention, comprising: the compressor 10 be connected successively, cross valve 20, indoor heat exchanger 30 and outdoor heat exchanger 40; The first interface D of cross valve 20 is connected with the port of export of compressor 10, second interface E of cross valve 20 is connected with indoor heat exchanger 30,3rd interface S of cross valve 20 is connected with the entrance point of compressor 10, and the 4th interface C of cross valve 20 is connected with outdoor heat exchanger 40; The port of export of compressor 10 is connected with the transfiguration cylinder entrance point of compressor 10, and the pipeline between the port of export of compressor 10 and the transfiguration cylinder entrance point of compressor is provided with magnetic valve 60; Cross valve 20 is connected with the constant volume cylinder entrance point of compressor 10 by gas-liquid separator 50; Controller, detects the duty of magnetic valve 60 and the actual motion state of compressor 10.By the power on/off state of electromagnetism and comparing of compressor actual working state, judge whether compressor occurs single twin-tub switching failure, prevent air-conditioner unit from occurring abnormal conditions, improve the reliability and stability of air-conditioner unit.
See the single cylinder operation schematic diagram that Fig. 1 is according to air-conditioner of the present invention, magnetic valve 60 is opened, and be communicated with the port of export of compressor 10 and the transfiguration cylinder entrance point of compressor, high pressure gas enters the transfiguration cylinder of compressor, and the idle running of transfiguration cylinder realizes single cylinder and runs.
See the twin-tub operation schematic diagram that Fig. 2 is according to air-conditioner of the present invention, magnetic valve 60 cuts out, the port of export of compressor 10 and the transfiguration cylinder entrance point of compressor cut off, and low-pressure gas enters described transfiguration cylinder through gas-liquid separator 50 outlet, and the acting of transfiguration cylinder compression realizes twin-tub and runs.
See Fig. 1 and Fig. 2, the transfiguration cylinder entrance point of compressor 10 arranges the first temperature sensor 71.The second temperature sensor 72 is provided with between cross valve 20 and gas-liquid separator 50.Gas-liquid separator 50 outlet is connected with transfiguration cylinder entrance point.Gas-liquid separator 50 exports and arrange check valve 90 between transfiguration cylinder entrance point.Throttling arrangement 80 is provided with between indoor heat exchanger 30 and outdoor heat exchanger 40.Air-conditioner also comprises controller, controls and judges the on off state of magnetic valve 60.
See Fig. 3, according to the determination methods of air-conditioner volume change of the present invention, detect the temperature T1 of transfiguration cylinder entrance point; Detect the temperature T2 of constant volume cylinder entrance point, T2-T1=K; Detect a period of time, if during K >=C, then compressor 10 actual motion state is single cylinder; If during K < C, then compressor 10 actual motion state is twin-tub; If judged result conforms to the state that should perform, then continue to run; If judged result and the state that should perform do not meet, then stopping alarm.
When single cylinder runs, magnetic valve 60 is opened; When twin-tub runs, magnetic valve 60 cuts out; Temperature sensor 71 detects the temperature T1 of lower air entry, contrast T1 and air intake duct temperature T2, T1-T2=K, constant C, determine by experiment according to unit cold difference, span is 3 DEG C to 7 DEG C, when continuing certain hour to be detected, during K >=C, then judge that compressor 10 actual motion state is single cylinder, work as certain time, when K ﹤ C being detected, then judge that compressor 10 actual motion state is twin-tub.When master control export instruction and by detect feedback actual motion state inconsistent time, then shut down report fault.
Detect the energising situation of magnetic valve 60, if magnetic valve 60 is energized, then compressor 10 should perform duty is single cylinder running status.Detect the energising situation of magnetic valve 60, if magnetic valve 60 dead electricity, then compressor 10 should perform duty is twin-tub running status.
Arrange the first temperature sensor 71 at compressor 10 times cylinders (transfiguration cylinder) air intake duct place, detected temperatures is T1(unit DEG C); Arrange the second temperature sensor 72 at the gas-liquid separator 50 air intake duct place of compressor 10, detected temperatures is T2(unit DEG C);
When air-conditioner unit runs when needs single cylinder, magnetic valve 60 is opened, and now exhaust side branch road directly communicates with compressor 10 lower cylinder, and now the temperature T1 of the first temperature sensor 71 detection is close with delivery temperature.When air-conditioner unit needs twin-tub to run, magnetic valve 60 cuts out, and now gas separates to manage and is connected with lower suction cylinder, and the temperature T1 that the first temperature sensor 71 detects is close with suction temperature T2.
Concrete determination methods:
1, the start of air-conditioner unit runs, and continues to detect magnetic valve 60 state, when detecting that magnetic valve 60 obtains electric, air-conditioner unit allocation thinks that single cylinder operates.
Setting T1-T2=K, as K >=C, and continues t1 second, then judges that now air-conditioner unit actual motion state is single cylinder running status, now consistent with the order of air-conditioner unit allocation, continuous service; As K ﹤ C, and continue t1 second, then judge that now air-conditioner unit actual motion state is twin-tub running status, now inconsistent with control command, then stopping alarm, ensures reliability and the safety of system.
2, the start of air-conditioner unit runs, and continues to detect magnetic valve 60 state, when magnetic valve 60 dead electricity being detected, controls to export as twin-tub.
Setting T1-T2=K, as K ﹤ C, and continues t1 second, then judges that now air-conditioner unit actual motion state is twin-tub running status, now export with mainboard order consistent, continuous service; As K >=C, and continue t1 second, then judge that now air-conditioner unit actual motion state is single cylinder running status, now export with mainboard control inconsistent, then stopping alarm.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
By the power on/off state of magnetic valve and comparing of compressor actual working state, judge whether compressor occurs single twin-tub switching failure, prevent air-conditioner unit from occurring abnormal conditions, improve the reliability and stability of air-conditioner unit.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an air-conditioner, is characterized in that, comprising:
The compressor (10) be connected successively, cross valve (20), indoor heat exchanger (30) and outdoor heat exchanger (40);
The port of export of described compressor (10) is connected with the transfiguration cylinder entrance point of described compressor, and the pipeline between the port of export of described compressor (10) and the transfiguration cylinder entrance point of described compressor is provided with magnetic valve (60);
Described cross valve (20) is connected with the constant volume cylinder entrance point of described compressor by gas-liquid separator (50);
Controller, detects the duty of described magnetic valve (60) and the actual motion state of described compressor (10).
2. air-conditioner according to claim 1, is characterized in that, the transfiguration cylinder entrance point of described compressor arranges the first temperature sensor (71).
3. air-conditioner according to claim 1 and 2, is characterized in that, is provided with the second temperature sensor (72) between described cross valve (20) and described gas-liquid separator (50).
4. air-conditioner according to claim 1, is characterized in that, described gas-liquid separator (50) outlet is connected with described transfiguration cylinder entrance point.
5. air-conditioner according to claim 4, is characterized in that, arranges check valve (90) between described gas-liquid separator (50) outlet and described transfiguration cylinder entrance point.
6. air-conditioner according to claim 1, is characterized in that, is provided with throttling arrangement (80) between described indoor heat exchanger (30) and described outdoor heat exchanger (40).
7. the air-conditioner according to Claims 2 or 3, is characterized in that, also comprises controller, controls and judges the on off state of described magnetic valve (60).
8. a determination methods for air-conditioner volume change, is characterized in that,
Detect the temperature T1 of transfiguration cylinder entrance point; And the temperature T2 of constant volume cylinder entrance point, T2-T1=K;
Relatively K and constant C, detects a period of time, if during K >=C, then compressor actual motion state is that single cylinder runs; If during K < C, then compressor actual motion state is that twin-tub runs;
If judged result conforms to the state that should perform, then continue to run; If judged result and the state that should perform do not meet, then stopping alarm.
9. the determination methods of air-conditioner volume change according to claim 8, is characterized in that, the energising situation detecting magnetic valve judges the state that perform, if solenoid valves, the state that then should perform is single cylinder running status, if magnetic valve dead electricity, is then twin-tub running status.
10. the determination methods of air-conditioner volume change according to claim 8, described constant C span is 3 DEG C to 7 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719349.6A CN104729172B (en) | 2013-12-23 | 2013-12-23 | Air conditioner and capacity change judgment method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719349.6A CN104729172B (en) | 2013-12-23 | 2013-12-23 | Air conditioner and capacity change judgment method thereof |
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| CN104729172A true CN104729172A (en) | 2015-06-24 |
| CN104729172B CN104729172B (en) | 2017-01-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106152342A (en) * | 2016-07-04 | 2016-11-23 | 珠海格力电器股份有限公司 | Variable-displacement-ratio two-stage compression air conditioning system and control method thereof |
| CN109269039A (en) * | 2018-08-06 | 2019-01-25 | 珠海格力电器股份有限公司 | Control method of compressor and refrigerant circulating system |
| WO2020077775A1 (en) * | 2018-10-19 | 2020-04-23 | 珠海格力电器股份有限公司 | Compressor cylinder block switching detection method and device and air conditioner |
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| CN106152342A (en) * | 2016-07-04 | 2016-11-23 | 珠海格力电器股份有限公司 | Variable-displacement-ratio two-stage compression air conditioning system and control method thereof |
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| WO2020077775A1 (en) * | 2018-10-19 | 2020-04-23 | 珠海格力电器股份有限公司 | Compressor cylinder block switching detection method and device and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104729172B (en) | 2017-01-18 |
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